How do we prevent online grooming?

There is alot of ideas how to prevent online grooming, depending on the person you ask. Most people agree on that the parents have to make sure, that they know what their kid is doing online. The parents have to talk to the kids about online grooming, and make sure that the kid is aware of the fact, that there is person out in the world, that only want to abuse small children. Some people mean that the parents have to block severeal webpages or even stalk your kid, to be sure that this is not happening. However in the dream secenario your kid will understand the danger, and come to you if he/she experiences online grooming, or atleast someone who is trying to do it.